There are many reasons that cause brainstem hemorrhage. Clinically, it is mostly seen in patients with underlying diseases, such as hypertension, diabetes, and hyperlipidemia. Due to the lack of effective control and treatment of blood pressure, blood sugar, and blood lipids over a long period, severe arteriosclerotic changes and even arteriosclerotic plaques can develop. The blood vessels’ own regulatory functions gradually deteriorate. Under certain triggering factors, such as fatigue, exhaustion, and mental stress, blood pressure can transiently increase. When it exceeds the blood vessels' capacity to adjust, brainstem hemorrhage is likely to occur. Once brainstem hemorrhage occurs, the condition is often critical and requires immediate transportation of the patient to the nearest hospital for treatment.